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ENGINE APPLICATION MANUAL GM Powertrain
Gasoline 4.3L V6 90 Degree Revised: 08/15/2000
File: c:\data\manuales\v6-truck\am43v6#3.doc
Contact:Luis Nespolo - (248) 857-1558 Printed: 8/15/00
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3.0 GMPT SYSTEM INTERFACES
3.1 INTERNAL INTERFACES TO GMPT
3.1.1 Engine Interface to transmission
The transmission shall be attached to the rear end of the engine, which provided the flange face
attachment illustrated in the figure 3.1.1- I.
Figure 3.1.1-I: Transmission attachment
3.1.1.1 Automatic Transmission
The 4.3L V6 engine could be mated to either: the GM Automatic Transmission Hydra Matic
4L60E or the GM Automatic Transmission Hydra Matic 4L80E
Figure 3.2.1-I to 3.2.1-XVIII shows the PCM Engine to Automatic Transmission Mechanization
Diagram.
3.1.1.2 Manual Transmission and Clutch
The GM Manual Transmission recommended is a Five Speed Manual (MW 3)
The following engine-transmission, clutch interface issues must be considered:
Manual transmissions require the engine crankshaft pilot bearing to be able to support up to 920
lbs (4292 N) of radial load due to transmission internal gear forces.